100 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Azygograptus? simplex Ruedemann. 



Dawsonia campanulata Ruedemann (not Nicholson, 1873), Bull. New York State 



Mus., 42, 1901, p. 520. 

 Azygograptus? simplex Ruedemann, Mem. New York State Mus., 11, pt. 2, pp. 



258-260, pi. 14, fig. 10, figs. 163-171. 

 Chazyan (Normanskill): Kenwood, Glenmont, Mount Moreno, and Lansingburg, 



New York. 



Azygograptus? walcotti Lapworth. 



Azygograptus? walcotti (Lapworth) Gurley, Jour. Geol., 4, 1896, pp. 69, 92. 

 Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 257, 258, fig. 162. 

 Chazyan (Normanskill): Stockport, New York. 



BAIRDIA ANTICOSTIENSIS Jones. See Krausella anticostiensis. 

 BALANOCRINITES Troost. See Lampterocrinus Roemer. 

 BALANOCRINUS Hall. See Lampterocrinus Roemer. 



BALTOCERAS Holm. Genotype: Endoceras burchardii Dexitz. 



Baltoceras Holm, Geol. Mag., dec. 4, 4, 1897, p. 251. Ruedemann, Bull. New 

 York State Mus., 90, Pal., 14, 1906, p. 432. Hyatt, Zittel-Eastman Textb. 

 Pal., 1, 1900, p. 517. 



Baltoceras(?) pusillum Ruedemann. 



Baltoceras(?) pusillum Ruedemann, Bull. New York State Mus., 90, Pal. 14, 1906, 



p. 431, pi. 9, fig. 4, 5. 

 Canadian (Beekmantown): Valcour, New York. 



BARRANDELLA Hall and Clarke. See Clorinda Barrande. 



BARRANDEOCERAS Hyatt. Genotype: Nautilus natator Billings. 



Barrandeoceras Hyatt, Proc. Boston Soc. Nat. Hist., 22, 1884, p. 299. Zittel. 

 Handb. Pal., 2, Munich, 1884, p. 382. Foord, Cat. Foss. Ceph. British Mus., 

 11, 1891, p. 77. Hyatt, Proc. Amer. Philos. Soc., 32, 1894, p. 450. Miller, 

 N. A. Geol. Pal., 2d App., 1897, p. 771. Whiteaves, Geol. Surv. Canada, 

 Pal. FOBS., 3, pt. 4, 1906, p. 307. Ruedemann, Bull. New York State Mus., 

 90, Pal. 14, 1906, p. 454. Grabau and Shimer N. A. Index Fossils, 2, 

 1910, p. 65. 



Barrandeoceras americanum (D'Orbigny). 



Lituites convolvans (Hisinger?) Hall, Pal. New York, 1, 1847, p. 53, pi. 13, figs. 



2, 2a. 

 Hortholus Americanus D'Orbigny, Prodr. de Pal., 1, 1849, p. 1 (new name for 



Lituites convolvans Hall). Emmons, Amer. Geology, 1, pt. 2, 1855, p. 146. 

 Lituites Americanus Miller, N. A. Geol. Pal., 1889, p. 442. 

 Barrandeoceras convolvans Hyatt, Proc. Amer. Philos. Soc., 32, 1894, p. 451. 



Miller, N. A. Geol. Pal., sec. app., 1897, p. 771. Grabau and Shimer, N. A. 



Index Fossils, 2, 1910, p. 66. 

 Barrandeoceras subcostulatum Whiteaves, Ottawa Naturalist, 12, 1898, p. 121; 



Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 310, pi. 38. 

 Black River: Watertown, New York (Watertown); Wolfe Island, near Kingston, 



Canada. 



BARRANDEOCERAS CONVOLVANS Hyatt. See Barrandeoceras americanum. 

 BARRANDEOCERAS ELRODI Milleri. See Gyroceras elrodi. 



